It's great to see more competition ideas, though I'm curious, how will you take into account the problem that plagues all energy-based competitions - higher networth, higher available energy. With attacks, you also have to consider level of the players. While everyone can get a FF 3 multiplier, base respect is determined by target level and naturally level 100s have a higher pool of high base respect targets (and likely more nw), giving them a significant advantage.
Could do level / nw brackets maybe, but it's still very tricky to do fairly imo.